Can annihilating Dark Matter be lighter than a few GeVs?
Astrophysics
2008-11-26 v3
Abstract
We estimate the gamma ray fluxes from the residual annihilations of Dark Matter particles having a mass mdm \in [MeV, O(GeV)] and compare them to observations. We find that particles lighter than O(100 MeV) are excluded unless their cross section is S-wave suppressed.
Cite
@article{arxiv.astro-ph/0208458,
title = {Can annihilating Dark Matter be lighter than a few GeVs?},
author = {C. Boehm and T. A. Ensslin and J. Silk},
journal= {arXiv preprint arXiv:astro-ph/0208458},
year = {2008}
}
Comments
4 pages. No figure. Values corrected (last column Table.1). Text clarified. Conclusions unchanged